Bed-bottom



UNITED STATES lPATENT OFFICE..

ROBERT L. HALL, OF LOWELL, MASSACHUSETTS.

BED-BOTTOM.

Specification forming part of Letters Patent No. 50,118, dated September26, 1865.

To all whom 'it may concern:

Be it known that I, ROBERT L. HALL, of Lowell, in the county ofMiddlesex and State of Massachusetts, have invented new and usefulImprovements in Adjustable Spring Bed- Bottoms; and l do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accompanying drawings, and tothe letters of referencemarked thereon.

The nature of my invention consists in the arrangement and constructionof the slats, springs, and windlasses, as hereinafter set forth.

To enable others skilledin the art to make and use my invention, I willproceed to describe its construction and operation.

Figure l represents a plan of a bedstead with the adjustablespring-bottom attached. Fig. 2 represents a section through A A and B B,showing the parts beyond. Fig. 3 repre sents a plan of the wrench usedfor operatin g the windlasses.

a a a represent the slats; b b b, theelastic springs; c c c, the pins 5d d, the wiudlasses jj, the wrench-holes; c c, the ratchets; f f, the

pawls; gg, the windlass-frame; h h, the cleats, and i forks.

The windlasses d d being placed on their bearings in the frame g g,which frame is supported on any common bedstead bythe additionalattachment of cleats 7i 7L, the slats a a a being prepared with forks t't t', and placed in their position on the windlasses d d, the elasticsprings l) b b, both ends being secured to the windlasses d d, form aloop, through which the pins c c c project. The elastic springs b b bare then attached to the slats a a d at both ends by the pins c c c,projecting and resting on both sides ofthe forks f1) i In order to givegreater or less elasticity or spring to the slats a a a, the wrench, asseen in Fig. 3, is applied to the windlasses d d at the holesjj, whichadjusts the same.

What I claim as my invention, and desire to secure by Letters Patent,is-

The construction of the elastic springs b b b, the windla-sses d d, andslats a a d, for the purpose described.

Witnessesz ROBERT L. HALL.

ABEIL PEVEY, GEORGE E. PEVEY.

